Door lock



Dec. 26, 1939. w. R; scHLAGE 2,184,875

INVENTR. Wala-e, 7&5

ATTORNEY.

Dec. 26, 1939. W R, SCHLAGE y2,184,875

DOOR LOCK Filed June 18, 1937 2 Sheets-Shee'cl 2 Patented Dec. 26, 1939 PATENT eprice DOOR LOCK Walter R. Schlage, San Francisco, Calif., assignor to Schlage Lock Company, San Francisco,

Calif., a corporation of California Application June 18, 1937, Serial No. 148,936

7 Claims.

This invention relates to door locks, and especially to improvements in the structure shown in my former Patent No. 1,991,031, entitled Door lock, issued February 12, 1935.

The above patent discloses a door lock comprising a main lock housing, a bolt or latch bolt mounted therein, a retractor plate connected with the latch bolt, an inner and an outer spindle whereby reciprocal movement is imparted to the retractor and the latch bolt, a pair of door knobs secured one to each spindle, and a dogging mechanism whereby the outer spindle and knob may be rendered inoperative. In addition thereto, a push button is mounted in the inner spindle, for either dogging or undogging the dogging mechanism, and a key-actuated mechanism is mounted in the outer spindle whereby the dogging mechanism may be released and the door opened from the outside. The present application embodies substantially the same features and operations but differs by a considerable reduction in the number of parts employed, and by smplication in construction and assembly of the parts; in addition thereto, the structure provides direct actuation of the inner spindle by the key-actuated mechanism in the outer spindle, and furthermore, provides a push-button mechanism whereby the dogging mechanism may be selectively actuated to operate temporarily or permanently.

'Ihe improved 4and simplified structure is shown by way of illustration in the accompanying drawings, in which Fig. 1 is a horizontal section of the lock, showing it mounted in a door;

Fig. 2 is a vertical section taken on line II-II of Fig. 1;

Figs. 3 and 4 are perspective views of the rollback portions of the respective spindles.;

Fig. 5 is a longitudinal section showing the spindles telescoped;

Fig. 6 is a perspective view of the retractor plate and the latch bolt;

Fig. 7 is a perspective view of the dog, together with the dogging lugs carried thereby;

Fig. 8 is a perspective view of the lock housing;

Fig. 9 is a perspective view of the retractor plate and the spindles extending therethrough, said view showing the manner in which the dogging lugs engage and dog the outer spindle;

Fig. 10 is a perspective view of the sleeve in which the push button is guided and retained;

Fig. 11 is a perspective view of the bar and the push button secured on the inner end thereof; and

Fig. 12 is a perspective view of the key-actuated cylinder lock which is mounted in the outer spindle.

Referring to the drawings in detail, and particularly to Figs. 1 to 7, inclusive, A and B indicate -5 the opposite faces of the stile of a hollow metal door, and C the vfront edge thereof. Formed in the faces A and B are openings which are provided for the reception of spindle bearings, -as will hereinafter appear; and formed in the front 10 edge C is an opening through which the lock housing generally indicated at D in Fig. 8 is adapted to be inserted.

The housing shown in Fig. 8 is rectangular in shape and consists of top and bottom plates 5 15 and 6 which are connected by front and rear end plates 'I and 8 and side plates 9 and I0 in which are formed screw-threaded openings.

The housing is inserted in the door through the opening formed in the front edge C, and when 20 inserted is secured by a pair of spindle bearings II and I2 which are inserted through the openings formed in the opposite faces A and B of the stile. The spindle bearings arev provided with threaded inner ends IIa and I2a. which are 25 screwed into the threaded openings formed in the side plates 9 and I9 of the housing and thus secure and support the rear end of the housing with relation to the side wall, while the front end will be secured and supported in the opening through 30 which it is inserted.

Slidably mounted for longitudinal movement within the housing is a retractor plate I3 (see Fig. 6). This plate is guided at the inner end by lugs I4 extending into slots I5-I5 formed in 35v the top and bottom plates 5 and 6, while the front end is guided by a latch bolt I6 which is secured to the retractor plate and normally extends through an opening 'la formed in the front plate.

On the rear end of the r-etractor plate is a 40 cross-bar I1 and formed in the front thereof is an opening I3 through which extend a pair of telescoping spindles I9 and 20 which are supported and journaled in the spindle bearings II and I2. Each spindle is provided with a trans- 45 verse slot to form roll-back sections ZI and 22 which engage the front face of the cross-bar I'I and impart reciprocal movement thereto when either spindle is rotated, and, as the cross-bar is secured to or forms a part of the retractor plate, 50 said plate together with the latch bolt will also be reciprocated.'

Formed inthe fro-nt face of the cross-bar I'I is a recess 23, and formed rearwardly thereof and extending through the cross-bar is a passage in which is mounted a clogging member 25, said dogging member being provided with a pair of dogging lugs 25 and also with a pin 26 which serves as a support and guide for a spring 21 which is interposed between the dog 24 and the rear plate 8 of the housing. The cross-bar i1 is provided with a pair of pins 28 which serve as supports and guides for a pair of springs 29 which are interposed between the cross plate and the rear plate 8 of the housing. The springs 29 normally function to maintain the retractor, the cross-bar, and the latch bolt in the extended position shown in Fig. 2, but they yield when either spindle is rotated so as to permit retraction of the latch bolt when the door is to be opened. The spring 21 also aids the springs 29 in their function, but in addition thereto actuates the clogging member 24, that is, it tends to maintain the dogging member within the passage formed in the cross-bar for its reception, the inward movement of the clogging member in this passage being limited by the dogging lugs 25, which enter recesses 25a formed in the rear face of the cross-bar l1.

Extending through the spindles is a bar 30, and secured on the inner end of the bar is a push button 3 l. Secured on the outer end of the inner spindle i9 is a sleeve 32 which forms a guide and a retainer for the push button 3 i. Formed in the sleeve is an opening, one side of which is straight. as shown at 33. The inner end of the opening is also straight, but is disposed at right angles to the side 33, as shown at 34. The side opposite to the side 33 is straight, as shown at 35, but is shorter, and a curved line 35 defines the outer portion of the opening, said curved line having two notches formed therein, as shown at 31 and 38. On the push button is secured a pin 39 which normally rests in the notch 38. This pin limits both the outward and inward movement of the button 3|, and also rotational movement thereof, as will hereinafter be described. Forming an extension of the sleeve 32 are a pair of leg members 4E which terminate in a washer-like plate 4I, said plate having a central opening formed therein through which the bar 30 extends, and by which it is guided. The plate 4| serves two functions: rst, that of a guide for the bar 30; and secondly, a support for a spring 42 which surrounds the bar and which is interposed between the plate il and the inner end of the push button. 'Ihe spring exerts an outward pressure, and as such, normally tends to maintain the push button in the outermost or extended position shown in full line at 3i in Fig. 1. The push button may, however, be depressed or pushed inwardly against the tension of the spring, and as the bar 3i] is secured to the push button, it will also be moved inwardly, and when it moves inwardly, a notch 30a formed in the bar will register with the dog 24'. This will accordingly project into the notch and secure the bar and button in the innermost or depressed position. Depression of the button permits an occupant of a room to temporarily lock or dog the outer knob against rotation, i. e., depression of the button permits the dog to move into the notch 3l) of the bar, and at the same time causes the lugs 25 to enter the notches 20a formed in the outer spindle, and as such, dogs the outer spindle and knob against rotation. Rotation of the inner knob permits automatic release of the dogging mechanism, as rotation of the inner knob and spindle causes the roll-back portion 2l of the inner spindle to engage the cross-bar i1 of the retractor plate, thereby forcing it, together with the retractor plate I3 and the latch I6, inwardly, and as the dog is carried by the cross-bar, it will move out of the notch 30a thereby permitting the spring 42 to restore the push button and bar to normal position. Thus a door may be temporarily locked from the inside by mere depression of the button, and it may be unlocked by mere rotation of the inner knob. It may also be unlocked by depression of the latch bolt, as such depression forces the retractor plate and crossbar inwardly. In other words, inward movement of the retractor plate, whether by rotation of the inner spindle or by depression of the latch bolt, releases the locking or clogging mechanism, as the dog 24 will move out of the notch 30a and thereby release the bar and permit it to return instantly to normal position.

By referring to Figs. 1 and 11, it will be noted that a slot is formed in the outer end of the push button. This slot permits insertion of the flat end of a key, or asimilar implement, and when an implement of this character is inserted, the button may be depressed, and at the same time rotated, so that the pin 38 will follow the curved line 35 of the opening formed in the sleeve, and thereby be guided into the notch 31. The button and the bar will in this instance be retained in the depressed position by the notch 31, and will not depend upon the notch 30a formed in the bar; in fact, this notch is rendered inoperative when the push button is depressed and simultaneously turned, as the bar will be rotated and as such is out of alignment with the dog 24. When the bar 30 has thus been rotated, the dog 24 is free to move inwardly, and the lugs 25 will accordingly enter the notches 20a of the outer spindle, and dog the same, together with the outer knob, against rotation.

When the button is depressed and rotated, as just described, so that the pin 38 is in register with the notch 31, the outer knob is permanently dogged, as rotation of the inner knob or depression of the latch bolt will only temporarily release the dog 24, but the dog will instantly return to clogging position the moment the latch bolt or inner knob resumes normal position.

When the outer kno-b has been permanently dogged, as just described, and if the door is closed, entrance from the exterior can only be attained by means of a key. For this reason a standard form of cylinder lock, the housing of which is shown at 5D, is secured in the outer end of the outer spindle. The cylinder of this lock is rotatable when a key is inserted. The inner end of the cylinder projects beyond the inner end of the housing 50, as shown at 5I. It is surrounded by a sleeve 52, and a pin 53 projects through the sleeve and the cylinder. The opposite ends of the pin project beyond the sleeve, and as such, are in a position to engage a pair of lugs 54 formed on the inner end of the inner spindle (see Figs. 1 and 3). The lugs shown in this instance are spaced apart, so that the pin 53 may have a free rotational movement, without imparting rotation to the inner spindle; or, stating it in another way, the inner knob and spindle must be free to rotate to open the door from the interior, without imparting movement to the pin 53 which extends through the cylinder of the cylinder lock.

If the outer knob has been permanently dogged from the inside by inward and rotational movement of the push button, and the door is then closed, it is possible to open the door from the outside by merely inserting a key, such as 'shown at 6U, and rotating the Ycylinder 5|. In sodoing, the cylinder will r'otate approximately 180 before the pins engage the lugs 54, but when they do, they will impart a rotary motion to the inner spindle and the roll-back portion 2| thereof 'will accordingly cause retraction of the retractor plate and the latch bolt, and thereby cause opening of the door. By rotating the key back't'o normal position and extracting it, the outer knob is again left in dogged or locked position, and it will remain in this condition until. the position of the push button is changed.

Alock of the character here'shown is particularly intended for use in outside doors, such as the front or rear door of a dwelling, or oflicc doors, and the like. If used in an oiiice door, it is possible fory the occupant of the oflice to temporarily or permanently dog the outer knob. v

If the occupant wishes merely to dog the outer knob while temporarily occupying the room, it is only necessary to depress the button 3|. Upon leaving the room., rotation of the knob automatically releases the button and restores it to no-rmal position, and the door is thus unlocked. On the other hand, if it is desired to permanently dog the outer knob, the button is depressed, and at the same time rotated, and while the occupant can leave the room at any time by mere rotation of the inner knob, re-entrance can be attained only by the use of a proper key.

While this and kother features of the invention have been more or less specifically described and illustrated, I nevertheless wish it understood that changes may be resorted to within the scope of the appended claims, and that the materials and nish of th-e several parts employed may be such as the experience and judgment of the Inanufacturer may dictate.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

l. In a lock of the character described, inner and outer knob actuated independently rotatable spindles, a latch bolt adapted to be retracted by either spindle, a dog for dogging the outer spindle against rotation, means whereby rotation of the inner spindle or depression of the latch bolt will move the dog from dogging position to undogging position; key-actuated means in the outer spindle, and a connection -between said key-actuated means and the inner spindle whereby the inner spindle is rotatable by the key actuated means to release the dogging mechanism.

2. In a lock, `a latch bolt, an inner and an outer spindle to operate the latch bolt, a bar within the spindle, means on the bar for imparting longitudinal or rotational movement thereto, a dog engageable with the bar and securing the oar when it is moved to its longitudinal position, said dog simultaneously dogging the outer spindle against rotation, means actuated by inward movement of the latch bolt for undogging the cuter spindle and for simultaneously releasing the bar, and means for moving the dog to dog the outer spindle against rotation when rotational movement is imparted to the dog' -engageable with the bar and securing uthe bar when moved to its longitudinal position, lsaid dog simultaneously dogging the outer spindle against rotation, .means actuated by the key actuated means for imparting inward-movement to the latch bolt, said inward movement undogging the outer spindle and simultaneously releasing the bar, and meansfor moving the dog to dog the outer spindle against rotation when rotational movement is imparted to the bar, said bar being non-releasable in its rotated position upon inward movement of the latch bolt.

fl. In a lock an inner andan outer spindle, a latch loo-lt, a retractor actuated by the spindles and secured to the latch'bolt, a dog carried by the retractor, said dog being movable in unison with the retractor and also movable independently thereoi'a bar within the spindles,` said :bar being rotatable and longitudinally movable within the spindles to assume either an outer or an inner position, a spring normally maintaining the` bar in its outer position, said bar when in the outer position engaging the dog and holding it in an undogged position, said bar `when in its inner position being secured by the dog, and said dog simultaneously engaging the outer spindle and dogging said spindle against rotation, means actuated by inward movement of the latch bolt for undogging the outer spindle and for simultaneously releasing the bar to permit the spring actuating the same to return the bar to its normal outer position, means for partially rotating the bar when in its inner position, and means other than the dog for securing the bar when partially rotated, said bar leaving the dog in its dogging position, and said bar being non-releasable by inward movement of the latch bolt when in its partially rotated position. v

5. In a lock having a rotatable inner and outer spindle and a retractor actuated thereby, a dog for rendering the outer spindle inoperative, said dog leaving the inner spindle operative, a bar within the spindles, said bar normally engaging the dog` and holding it in a position where both spindles are operative, means for moving the bar longitudinally to a position where it releases the dog and renders the .outer knob inoperative, said dog retaining the bar in its longitudinally moved position, means actuated by inward movement of the retractor for und-ogging the dog to render the outer vknob operative and to release the bar, means for returning the bar to normal position when released, means for rotating the bar to release the dog and to render the outer spindle inoperative, and means for retaining the bar in its rotated position and against return to `its normal position upon inward movement of the retractor.

6. In a' lock of the character described an inner and an outer spindle, a latch bolt adapted to be retracted by either spindle, a dog for dogging the outer spindle against rotation, a spring normally holding the dog indogging position, a push button vin the inner spindle, a bar connected therewith whereby the dogging mechanism is actuated, said bar normally engaging the do-g and holding itin undogged position, and releasing the dog to dog the outer spindle against rotation when the bar is pushed inwardly, said dog when released by the bar simultaneously securing the bar in its inward position, means whereby inward movement oi" the latch bolt movesvthe dog to undogging position and releases the bar, means `for returning the bar and button to normal posiand a connection between said key-actuated means and the inner spindle whereby the inner spindle is rotatable by the key-actuated means to move the latch bolt inwardly and thereby to release the dog.

7. In a lock of the character described an inner and an outer spindle, a latch bolt adapted to be retracted by either spindle, a spring actuated dog engageable with the outer spindle to dog said spindle against rotation, a manually movable member engageable or disengageable with the dog, said member when engaging the dog holding the dog out of dogging position, and when disengaged from the dog permitting the dog to assume clogging position, said manually movable member adapted to assume a first, a second, and a third position, a spring normally maintaining said manually movable member in its first position, and said member engaging and holdingthe dog in undogged position when in its first position, said member when moved to its second position disengaging the dog and permitting the dog to assume clogging position, said dog simultaneously securing said member in the second position, means actuated by inward movement of the latch bolt for moving the dog to undogging position and for releasing said manually movable member, so that it will be returned by its spring to the first position, said member when in its third position disengaging the dog and permitting it to assume dogging position, and means other than the dog for securing the manually movable member against release when in its third position, when inward movement is imparted to the latch bolt.

WALTER R. SCHLAGE.. 

